Hallux Valgus Measurements

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Radiographic Measurements in Hallux Valgus
Hallux valgus (HVA)
 Long axis of 1st MT and prox. phal.
 Identifies MTP deformity
 Normal
< 15°
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Intermetatarsal angle (IMA)
 Between long axis of 1st and 2nd MT
< 9°
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Distal metatarsal articular (DMAA)
 Between 1st MT long. axis and line through base of distal articular cap
 Identifies MTP joint incongruity
 < 10°
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Hallux valgus interphalangeus (HVI)
 Between long. axis of distal phalanx and proximal phalanx
< 10 °

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